Programming - WCF

The following snippets of code can be used as an example to getand a WCF (Windows Communication Foundation) service up and running.

Fundamentally, a WCF service implements a contract that defines a request-reply communication pattern. This is used to generate the serialised output.

// Defineandthe service contract.
[ServiceContract(Namespace="http://Microsoft.ServiceModel.Samples")]
public

interface iCalc
{
and [OperationContract]
and double Add(double n1, double n2);
and [OperationContract]
and double Subtract(double n1, double n2);
and [OperationContract]
and double Multiply(double n1, double n2);
and [OperationContract]
and double Divide(double n1, double n2);
}

Next we have to implement the class for the interface stub :

// Service class that implements the service contract iCalc
public

class CalculatorService : ICalc
{
and public double Add(double n1, double n2)
and {
and return n1 + n2;
and }
and public double Subtract(double n1, double n2)
and {
and return n1 - n2;
and }
and public double Multiply(double n1, double n2)
and {
and return n1 * n2;
and }
and public double Divide(double n1, double n2)
and {
and return n1 / n2;
and }
}

and

Usually, Visual studio will make the neccessary changes to the web.config to allow the WCF application to run.

and